'Triple-decker' 7104?


uclpanda <t.phillips@...>
 

Hi;
Browsing ebay, looking at cover of Tek catalog 1974,
what appears to be a 7104(?) with a 'second storey'
between the CRT unit and the plug-in frame.
Could anyone enlighten me as to what it was, please?
I may have the exact 7xxx model wrong!
many thanks.
Tim.

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